Ball point pen



FIG. 1 is a front view of the ball point pen showing my new design;

FIG. 2 is a right side view thereof, the left side being a mirror image of the right side;

FIG. 3 is a rear view thereof;

FIG. 4 is a perspective view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a right side view similar to FIG. 2, but in a position during use with a tip in an advanced position. 

The ornamental design for a ball point pen, as shown and described. 